A rivet nut gun

Abstract

The application discloses a rivet nut gun and relates to the technical field of the rivet nut gun. The rivet nut gun comprises a shell, a driving rotating part is arranged on the inner wall of the shell, a first linkage mechanism is connected with the driving rotating part, a puller mechanism for cooperating with a stud is rotationally connected with the first linkage mechanism, and the driving rotating part is used for driving the puller mechanism to reciprocate through the first linkage mechanism. The first linkage mechanism is connected with a second linkage mechanism, and the driving rotating part is also used for driving the second linkage mechanism to work through the first linkage mechanism so as to drive the puller mechanism to rotate. The application can facilitate quick riveting.

Description

Technical Field

[0001] This application relates to the technical field of rivet nut guns, and more particularly to a rivet nut gun. Background Technology

[0002] Rivet nuts are fastening parts, especially suitable for riveting work in environments with confined spaces or where traditional nuts and bolts are inconvenient to use. They are widely used in the assembly of electromechanical and light industrial products in industries such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, and decoration.

[0003] Reference Figure 1 The rivet nut consists of a rivet nut a and a threaded stud b. The stud b has a threaded hole b1. It is usually used with a rivet nut gun. When using it, the rivet nut needs to be placed in the hole to be fixed. Then, by using the rivet nut gun to cooperate with the threaded hole b1, the stud b is rotated to make the stud b displaced, thereby deforming the sleeve a1 on the rivet nut a and pressing it tightly onto the riveting material, thus achieving the connection and fixation.

[0004] Currently, existing rivet guns, after engaging with the threaded hole on the stud by rotating, simply continue to rotate to displace the stud and deform the sleeve. When rapid riveting is required, the user can only achieve this by preset and changing the rotation speed of the rivet gun. However, in this case, if the preset rotation speed of the rivet gun is too high, it will be difficult for the rivet gun to initially engage with the threaded hole on the stud, and the high-speed rotation at the output end of the rivet gun may even damage the threaded hole structure. Summary of the Invention

[0005] To facilitate rapid riveting, this application provides a rivet nut gun.

[0006] The rivet nut gun provided in this application adopts the following technical solution: A rivet nut gun includes a housing, on the inner wall of which a drive member is provided. The drive member is connected to a first linkage mechanism, which is rotatably connected to a pull head mechanism for engaging with a stud. The drive member is used to drive the pull head mechanism to reciprocate through the first linkage mechanism. The first linkage mechanism is connected to a second linkage mechanism, and the drive member is also used to drive the second linkage mechanism to rotate through the first linkage mechanism.

[0007] By adopting the above technical solution, the following riveting nut actions can be completed: First, the driving component drives the first linkage mechanism to work, which in turn drives the second linkage mechanism to work, so that the pull head mechanism engages with the threaded hole on the stud. Then, the driving component continues to drive the first linkage mechanism and the second linkage mechanism to work. The first linkage mechanism moves the stud through the pull head mechanism, while the second linkage mechanism rotates the stud through the pull head mechanism. This application enables the stud to rotate and be moved simultaneously, improving the riveting speed.

[0008] Preferably, the first linkage mechanism includes a first gear disposed on the output end of the drive component; a rotating shaft is rotatably disposed on the inner wall of the housing; a second gear is disposed on the rotating shaft; the first gear meshes with the second gear; a transmission tooth groove is provided on the outer wall of the rotating shaft; a third gear is also rotatably disposed on the inner wall of the housing; the third gear meshes with the transmission tooth groove; a through connecting hole is opened at the end of the third gear; a screw is threadedly connected to the connecting hole; a guide component is also provided on the screw; a guide groove is opened on the inner wall of the housing; the guide component is locked in the guide groove and the guide component and the guide groove are slidably connected; the screw is connected to the pull head mechanism.

[0009] By adopting the above technical solution, the first gear, the second gear, the rotating shaft, the transmission tooth groove, and the third gear can be driven to rotate synchronously by the driving component. At this time, the screw will move, thereby driving the pull head mechanism to move.

[0010] Preferably, a pressure detection element and a transmission element are sequentially provided on the inner wall of the housing. The pressure detection element abuts against the transmission element, and the transmission element abuts against the third gear. The pressure detection element detects the extrusion force of the third gear based on the extrusion force exerted by the transmission element on itself. The inner wall of the housing is also provided with a control module connected to the drive element. The control module controls the drive element to work in response to the detection result of the pressure detection element.

[0011] By adopting the above technical solution, the pressure detection device can detect the extrusion force of the third gear, and the control module can control and adjust the force output by the output end of the drive component based on the detection result of the pressure detection device.

[0012] Preferably, the second linkage mechanism includes a fourth gear mounted on a rotating shaft. The housing also has a mounting sleeve, with a receiving bushing rotating on the inner wall of the mounting sleeve. A linkage rod is mounted on the inner wall of the receiving bushing, and a fifth gear is mounted on the receiving bushing. The fourth and fifth gears mesh. A receiving hole is formed through the screw, and the linkage rod passes through the receiving hole. The end of the linkage rod near the pull-head mechanism has a mating part, and a mating groove is formed on the pull-head mechanism. The mating part is used to engage with the mating groove, thereby allowing the linkage rod to rotate synchronously with the pull-head mechanism.

[0013] By adopting the above technical solution, the rotation of the rotating shaft will drive the fourth gear, the fifth gear, the receiving bushing, the mounting sleeve and the linkage rod to rotate synchronously. When the driving component drives the pull head mechanism to move so that the mating part is inserted into the mating groove, the linkage rod and the pull head mechanism can rotate synchronously.

[0014] Preferably, the cross-sections of the mating groove and the mating part are both polygonal.

[0015] Preferably, the bushing is further provided with a mounting component, the mounting component including a mounting groove at the end and a first mounting hole extending through the bottom of the mounting groove, the linkage rod slidingly passing through the first mounting hole; the linkage rod has a stepped surface, a mounting spring is provided between the stepped surface and the mounting groove, one end of the mounting spring is provided on the stepped surface, and the other end is provided at the bottom of the mounting groove; the mounting component also includes an abutting surface on the side wall, the housing is provided with an abutting component, the abutting surface is used to abut against the abutting component to restrict the mounting component from moving away from the pull head mechanism.

[0016] By adopting the above technical solution, when the pull head mechanism moves towards the linkage rod, there may be a situation where the mating part is not aligned with the mating groove. In this case, the mating part cannot be inserted into the mating groove. This application can self-adjust to make the mating part aligned with the mating groove. Specifically, the pull head mechanism drives the linkage rod to move. During the movement of the linkage rod, the abutting surface will abut with the abutting part, and the mounting part will stop moving. However, the linkage rod continues to move and rotate, and the mounting spring is compressed. The rotation of the linkage rod is also the action of adjusting the mating part. After the mating part rotates a certain angle, it will be aligned with the mating groove.

[0017] Preferably, the housing has a second mounting hole, the linkage rod is movably inserted into the second mounting hole, and a limiting member is provided at the end of the linkage rod away from the pull head mechanism, the limiting member being located outside the housing.

[0018] By adopting the above technical solution, the limiting component is used to limit the linkage rod.

[0019] Preferably, the zipper mechanism includes a first zipper connected to the first linkage mechanism, and a second zipper is provided on the first zipper. The first zipper and the second zipper are rotatably connected, and the second zipper is used to cooperate with a stud.

[0020] Preferably, the first zipper head includes a retaining ring at the end, and the second zipper head includes an annular groove on the outer wall, wherein the retaining ring is engaged in the annular groove and the retaining ring and the annular groove are rotatably and slidably connected; the second linkage mechanism is used to drive the second zipper head to rotate.

[0021] By adopting the above technical solution, the first linkage mechanism can drive the first pull head to move, thereby driving the second pull head to move, while the second linkage mechanism can also drive the second pull head to rotate.

[0022] In summary, the present invention has at least one of the following beneficial technical effects: 1. This device is capable of performing the following riveting nut actions: first, driving the drive mechanism to activate the first linkage mechanism, which in turn activates the second linkage mechanism, causing the pull head mechanism to engage with the threaded hole on the stud; then, continuing to drive the drive mechanism to activate both the first and second linkage mechanisms. The first linkage mechanism moves the stud via the pull head mechanism, while the second linkage mechanism rotates the stud via the pull head mechanism. This application allows the stud to rotate while simultaneously being moved, improving riveting speed. 2. The pressure detection device can detect the extrusion force of the third gear, and the control module can control and adjust the force output at the output end of the drive component based on the detection results of the pressure detection device; 3. When the pull head mechanism moves towards the linkage rod, the mating part may not align with the mating groove. In this case, the mating part cannot be inserted into the mating groove. This application can self-adjust to align the mating part with the mating groove. Specifically, the pull head mechanism drives the linkage rod to move. During the movement of the linkage rod, the abutting surface will abut against the abutting part, and the mounting part will stop moving. However, the linkage rod continues to move and rotate, and the mounting spring is compressed. The rotation of the linkage rod is also the adjustment action of the mating part. After the mating part rotates a certain angle, it will align with the mating groove. Attached Figure Description

[0023] Figure 1 This is a sectional view used to illustrate the structure of a rivet nut; Figure 2 This is a cross-sectional view of a rivet nut gun according to an embodiment of this application; Figure 3 This is a sectional view used to illustrate the second linkage mechanism.

[0024] In the attached diagram, the following markings are used: a) rivet nut; a1) sleeve; b) stud; b1) threaded hole; 1) housing; 11) driving component; 12) guide groove; 13) second mounting hole; 2) first linkage mechanism; 21) first gear; 22) rotating shaft; 221) transmission gear groove; 23) second gear; 24) third gear; 241) connecting hole; 25) screw; 251) guide component; 252) receiving hole; 3) pull head mechanism; 31) first pull head; 311) retaining ring. 32. Second pull head; 321. Mating groove; 322. Ring groove; 4. Second linkage mechanism; 41. Fourth gear; 42. Mounting sleeve; 43. Receiving bushing; 44. Linkage rod; 441. Mating part; 442. Step surface; 443. Limiting component; 45. Fifth gear; 46. Mounting component; 461. Mounting groove; 462. First mounting hole; 463. Abutting surface; 47. Mounting spring; 48. Abutting component; 5. Pressure detection component; 51. Transmitting component. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] This application discloses a rivet nut gun, which is used to quickly complete the riveting of rivet nuts.

[0028] Reference Figure 1 and Figure 2 A rivet nut gun includes a housing 1, with a drive component 11 on the inner wall of the housing 1. The drive component 11 is preferably a motor. The drive component 11 is connected to a first linkage mechanism 2. The first linkage mechanism 2 is rotatably connected to a pull head mechanism 3 for engaging with a threaded hole b1 on a stud b. The drive component 11 drives the pull head mechanism 3 to reciprocate via the first linkage mechanism 2. The first linkage mechanism 2 is connected to a second linkage mechanism 4. The drive component 11 also drives the second linkage mechanism 4 via the first linkage mechanism 2, thereby rotating the pull head mechanism 3 and subsequently rotating the stud b.

[0029] This application enables the following riveting action for rivet nuts: First, the drive member 11 drives the first linkage mechanism 2 to work so that the pull head mechanism 3 connects and engages with the threaded hole b1 on the stud b. Then, the drive member 11 is driven again, and the first linkage mechanism 2 causes the pull head mechanism 3 to move the stud b to the right. The second linkage mechanism 4 causes the pull head mechanism 3 to rotate, thereby causing the stud b to rotate. At this point, the riveting of the rivet nut is completed. Finally, the drive member 11 is reversed so that the pull head mechanism 3 disengages from the threaded hole b1.

[0030] This application can quickly complete riveting without adjusting the output speed of the drive component 11. Compared with the method of changing the speed in the prior art, this application consumes less power for a single riveting operation.

[0031] Reference Figure 2 and Figure 3The first linkage mechanism 2 includes a first gear 21 located on the output end of the drive component 11, a rotating shaft 22 rotating on the inner wall of the housing 1, a second gear 23 fixed on the rotating shaft 22, and the first gear 21 meshing with the second gear 23; the outer wall of the rotating shaft 22 has a transmission tooth groove 221, and a third gear 24 rotating on the inner wall of the housing 1, which meshes with the transmission tooth groove 221; the end of the third gear 24 has a through connecting hole 241, and a screw 25 is threadedly connected to the connecting hole 241, which is arranged laterally; a guide 251 is also provided on the screw 25, and a guide groove 12 is provided on the inner wall of the housing 1, with the guide 251 being engaged in the guide groove 12 and the guide 251 and the guide groove 12 being slidably connected; the screw 25 is connected to the pull head mechanism 3.

[0032] The rotation of the drive component 11 will synchronously drive the first gear 21, the second gear 23, the rotating shaft 22, the transmission tooth groove 221, and the third gear 24 to rotate synchronously. At this time, the screw 25 will move laterally, thereby driving the pull head mechanism 3 to move laterally.

[0033] Reference Figure 2 The pull head mechanism 3 includes a first pull head 31 connected to the screw 25, and a second pull head 32 is provided on the first pull head 31. The first pull head 31 and the second pull head 32 are rotatably connected. The second pull head 32 is used to cooperate with the stud b. The second pull head 32 includes threads on its outer wall. The second pull head 32 is existing technology, so its specific structure will not be described in detail.

[0034] Reference Figure 2 and Figure 3 The second linkage mechanism 4 includes a fourth gear 41, which is fixed on the rotating shaft 22. The housing 1 is also provided with a mounting sleeve 42. A receiving sleeve 43 is rotatably mounted on the inner wall of the mounting sleeve 42. A linkage rod 44 is slidably mounted on the inner wall of the receiving sleeve 43. The linkage rod 44 and the receiving sleeve 43 are connected by a slider groove. The linkage rod 44 can move laterally within the receiving sleeve 43 and can also rotate synchronously with the receiving sleeve 43. A fifth gear is fixed on the receiving sleeve 43. Wheel 45, fourth gear 41 and fifth gear 45 mesh; a receiving hole 252 is opened through the screw 25, the receiving hole 252 is arranged horizontally, the linkage rod 44 is inserted into the receiving hole 252, the left end of the linkage rod 44 has a mating part 441, and the second pull head 32 has a mating groove 321. Specifically, the cross-section of the mating part 441 and the mating groove 321 are both hexagonal. The mating part 441 is used to be locked in the mating groove 321 so that the linkage rod 44 and the second pull head 32 rotate synchronously.

[0035] The rotation of the rotating shaft 22 will also drive the fourth gear 41, the fifth gear 45, the receiving bushing 43, the mounting sleeve 42 and the linkage rod 44 to rotate synchronously. At this time, the driving component 11 will drive the pull head mechanism 3 to move so that the mating part 441 is inserted into the mating groove 321, and the linkage rod 44 and the pull head mechanism 3 can rotate synchronously.

[0036] Reference Figure 2 Specifically, the first pull head 31 includes a retaining ring portion 311 at the end, and the second pull head 32 includes an annular groove 322 on the outer wall. The retaining ring portion 311 is engaged in the annular groove 322, and the retaining ring portion 311 and the annular groove 322 are rotatably and slidably connected.

[0037] The screw 25 can drive the first pull head 31 to move, thereby driving the second pull head 32 to move, and the linkage rod 44 can also drive the second pull head 32 to rotate.

[0038] Reference Figure 2 and Figure 3 When the second pull head 32 moves toward the linkage rod 44, the mating part 441 may not align with the mating groove 321. In this case, the mating part 441 cannot be inserted into the mating groove 321. To ensure that the mating part 441 and the mating groove 321 can automatically align, the bushing is also provided with a mounting part 46. The mounting part 46 includes a mounting groove 461 at the left end and a first mounting hole 462 that penetrates the bottom of the mounting groove 461. The linkage rod 44 slides through the first mounting groove 461. Within the hole 462, the linkage rod 44 can move left and right within the first mounting hole 462; the linkage rod 44 has a stepped surface 442, and a mounting spring 47 is provided between the stepped surface 442 and the mounting groove 461. The left end of the mounting spring 47 is located on the stepped surface 442, and the other end is located at the bottom of the mounting groove 461; the mounting member 46 also includes an abutting surface 463 on the side wall, and an abutting member 48 is fixed on the housing 1. The abutting surface 463 is used to abut against the abutting member 48 to restrict the mounting member 46 from moving to the right.

[0039] Specifically, the automatic alignment of the mating part 441 and the mating groove 321 is achieved as follows: the second pull head 32 drives the linkage rod 44 to move to the right. During the movement of the linkage rod 44, the abutting surface 463 will first abut against the abutting part 48, and the mounting part 46 will stop moving. However, the linkage rod 44 continues to move to the right and rotates, and the mounting spring 47 is compressed. The rotation of the linkage rod 44 is also the adjustment action of the mating part 441. The movement and rotation adjustment of the mating part 441 are carried out synchronously. After the mating part 441 rotates at a certain angle, it will align with the mating groove 321.

[0040] The installation of spring 47 provides adjustment time for the synchronous movement and rotation adjustment of mating part 441.

[0041] Reference Figure 3The housing 1 has a second mounting hole 13 on its right end. The linkage rod 44 is movably inserted into the second mounting hole 13. The right end of the linkage rod 44 is provided with a limiting member 443, which is located outside the housing 1. After riveting, the drive component 11 needs to be reversed. The compressed mounting spring 47 will reset and drive the linkage rod 44 to move to the left to reset. The limiting member 443 can prevent the linkage rod 44 from moving to the left and over-resetting.

[0042] Reference Figure 2 The inner wall of the housing 1 is provided with a pressure detection element 5 and a transmission element 51 in sequence. The pressure detection element 5 is preferably a pressure sensor. The pressure detection element 5 abuts against the transmission element 51, and the transmission element 51 abuts against the third gear 24. The pressure detection element 5 detects the extrusion force of the third gear 24 based on the extrusion force of the transmission element 51 on itself. The inner wall of the housing 1 is also provided with a control module connected to the drive element 11. The control module controls the drive element 11 to work in response to the detection result of the pressure detection element 5.

[0043] The control module controls and adjusts the force output from the output end of the drive component 11 based on the detection results of the pressure detection component 5.

[0044] The implementation principle of a rivet nut gun in this embodiment is as follows: First, the drive component 11 drives the first gear 21, the second gear 23, the rotating shaft 22, the transmission tooth groove 221, and the third gear 24 to rotate synchronously. At this time, the screw 25 will move to the right, thereby driving the first pull head 31 and the second pull head 32 to move to the right. Then, it is necessary to align the second pull head 32 with the threaded hole b1. As the second pull head 32 moves, the mating part 441 will be inserted into the mating groove 321. The rotation of the rotating shaft 22 will also drive the rotation of the fourth gear 41 and the fifth gear 45. The bushing and the linkage rod 44 will also rotate synchronously. In this case, the linkage rod 44 will drive the second pull head 32 to rotate, thereby making the second pull head 32 engage with the threaded hole b1 and drive the stud b to rotate. At the same time, the linkage rod 44 will also drive the stud b to move to the right, and the riveting is completed.

[0045] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A rivet nut gun, characterized in that: The device includes a housing (1), on the inner wall of which a drive member (11) is provided. The drive member (11) is connected to a first linkage mechanism (2). The first linkage mechanism (2) is rotatably connected to a pull head mechanism (3) for engaging with a stud. The drive member (11) is used to drive the pull head mechanism (3) to reciprocate through the first linkage mechanism (2). The first linkage mechanism (2) is connected to a second linkage mechanism (4). The drive member (11) is also used to drive the second linkage mechanism (4) to work through the first linkage mechanism (2), thereby driving the pull head mechanism (3) to rotate. The first linkage mechanism (2) includes a first gear (21) disposed on the output end of the drive component (11), a rotating shaft (22) rotatably disposed on the inner wall of the housing (1), a second gear (23) disposed on the rotating shaft (22), and the first gear (21) meshing with the second gear (23); the outer wall of the rotating shaft (22) has a transmission tooth groove (221), and a third gear (24) rotatably disposed on the inner wall of the housing (1), the third gear (24) meshing with the transmission tooth groove (221). The groove (221) meshes; the end of the third gear (24) has a through connecting hole (241), and the connecting hole (241) is threadedly connected to a screw (25); the screw (25) is also provided with a guide (251), and the inner wall of the housing (1) has a guide groove (12), the guide (251) is stuck in the guide groove (12) and the guide (251) and the guide groove (12) are slidably connected; the screw (25) is connected to the pull head mechanism (3); The second linkage mechanism (4) includes a fourth gear (41), which is mounted on a rotating shaft (22). The housing (1) is also provided with a mounting sleeve (42). A receiving sleeve (43) is rotatably provided on the inner wall of the mounting sleeve (42). A linkage rod (44) is provided on the inner wall of the receiving sleeve (43). A fifth gear (45) is provided on the receiving sleeve (43). The fourth gear (41) and the fifth gear (45) mesh. A receiving hole (252) is opened through the screw (25). The linkage rod (44) passes through the receiving hole (252). The end of the linkage rod (44) near the pull head mechanism (3) has a mating part (441). A mating groove (321) is opened on the pull head mechanism (3). The mating part (441) is used to be locked in the mating groove (321) so that the linkage rod (44) rotates synchronously with the pull head mechanism (3). The cross-sections of the groove (321) and the mating part (441) are both polygonal; the bushing is also provided with a mounting part (46), the mounting part (46) includes a mounting groove (461) at the end and a first mounting hole (462) through the bottom of the mounting groove (461), the linkage rod (44) slides through the first mounting hole (462); the linkage rod (44) has a stepped surface (442), a mounting spring (47) is provided between the stepped surface (442) and the mounting groove (461), one end of the mounting spring (47) is provided on the stepped surface (442), and the other end is provided at the bottom of the mounting groove (461); the mounting part (46) also includes an abutting surface (463) on the side wall, the housing (1) is provided with an abutting part (48), the abutting surface (463) is used to abut against the abutting part (48) to restrict the mounting part (46) from moving away from the pull head mechanism (3).

2. The rivet nut gun according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a pressure detection element (5) and a transmission element (51) in sequence. The pressure detection element (5) abuts against the transmission element (51), and the transmission element (51) abuts against the third gear (24). The pressure detection element (5) detects the pressure of the third gear (24) based on the pressure of the transmission element (51) on itself. The inner wall of the housing (1) is also provided with a control module connected to the drive element (11). The control module controls the drive element (11) to work in response to the detection result of the pressure detection element (5).

3. A rivet nut gun according to claim 2, characterized in that: The housing (1) has a second mounting hole (13), and the linkage rod (44) is movably inserted into the second mounting hole (13). The end of the linkage rod (44) away from the pull head mechanism (3) is provided with a limiting member (443), and the limiting member (443) is located outside the housing (1).

4. A rivet nut gun according to claim 1, characterized in that: The pull head mechanism (3) includes a first pull head (31) connected to the first linkage mechanism (2), and a second pull head (32) is provided on the first pull head (31). The first pull head (31) and the second pull head (32) are rotatably connected, and the second pull head (32) is used to cooperate with the stud.

5. A rivet nut gun according to claim 4, characterized in that: The first pull head (31) includes a retaining ring (311) at the end, and the second pull head (32) includes an annular groove (322) on the outer wall. The retaining ring (311) is engaged in the annular groove (322) and the retaining ring (311) and the annular groove (322) are rotatably and slidably connected. The second linkage mechanism (4) is used to drive the second pull head (32) to rotate.

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